Nutrient samples were collected from seven river stations and seven bay stations on May 27th. All bay stations were sampled at the surface and bottom. In the five days prior to sampling, 1.04 inches of precipitation were recorded at T.F. Green.
Among the river stations sampled, the highest total nitrogen (TN) and total dissolved nitrogen (TDN) were observed at Blackstone River @ Slater Mill and Blackstone River @ Bikepath Bridge (TN = 1,080 ppb, TDN = 1,090 ppb). The highest dissolved inorganic nitrogen (DIN) was observed at Blackstone River @ Slater Mill (757.7 ppb). The lowest TN was observed at Woonasquatucket River @ Manton Ave. Bridge (734 ppb). The lowest TDN and DIN were observed at Pawtuxet River @ Broad St. (TDN = 393 ppb, DIN = 150.7).
Among the bay stations sampled, the highest surface TN and TDN were observed at Phillipsdale Landing (TN = 1,070 ppb, TDN = 870 ppb). The highest DIN was observed at Pawtuxet Cove (466.5 ppb). The lowest surface TN was observed at Bullock Reach Buoy (464 ppb). The lowest TDN was observed at Conimicut Point (149 ppb). The lowest surface DIN was observed at Conimicut Point, Edgewood Yacht Club, and Bullock Reach Buoy (13 ppb, reflecting minimum detection limits for DIN).
The next scheduled sampling date is June 10th, 2026.